package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.time.LocalDateTime;

/**
 * 自定义切面实现公共字段自动填充处理逻辑
 *
 */
@Aspect
@Component
@Slf4j
public class AutoFillAspect {
    /**
     * 切入点
     */
    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void autoFillPointCut(){
    }
    /**
     * 前置通知，再通知中进行公共字段的赋值
     */
    @Before("autoFillPointCut()")
    public void autoFill(JoinPoint joinPoint) {
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        AutoFill annotation = signature.getMethod().getAnnotation(AutoFill.class);
        OperationType value = annotation.value();
        Object[] args = joinPoint.getArgs();
        Object arg = args[0];
        LocalDateTime now = LocalDateTime.now();
        Long id = BaseContext.getCurrentId();
        if(value == OperationType.INSERT){
            try {
                arg.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class).invoke(arg, now);
                arg.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class).invoke(arg, id);
                arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class).invoke(arg, now);
                arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class).invoke(arg, id);
            } catch (Exception e) {
                e.printStackTrace();
            }

        } else if (value == OperationType.UPDATE) {
            try {
                arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class).invoke(arg, now);
                arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class).invoke(arg, id);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

    }
}
